Protesting a 1990 visit by Vice President Dan Quayle to Portland, Oregon, a group of more than 20 artists calling themselves the Reverse Peristalsis Painters publicly vomited in red, white, and blue colors. The group called its action "a work of public art." In a flier, the painters said: "Look at the medium. Think about why it was chosen over conventional paint. Think about why Dan Quayle is visiting Portland. Look at our painting. Think about your government. Throw up your values." The colored vomit was created by ingesting mashed potatoes with either red, blue, or no food coloring mixed in. Then all took ipecac syrup or plain vinegar. One problem with the vomit was that for some reason the blue actually looked more greenish.

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